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<hht>
hello, anyone there?
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<jelly-home>
*crickets*
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<chrs_>
hi, anyone running linux on a samsung arm chromebook series three?
<chrs_>
the exynos 5 soc
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<popolon>
Does someone know the frequency or the cortex-a7 cores in cubieboard2, can't find the info on the site
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<steev>
chrs_: i do
<hno>
popolon, normally 912MHz.
<hno>
for all A20 chips.
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<popolon>
hno, thanks
<popolon>
as I seen 1Ghz somewhere
<popolon>
and a20 Olinuxino also didn't write frequency on it's site
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<popolon>
someone today said me than a7 is crappy
<hno>
popolon, Allwinner markets that as 1GHz. just as they market the 1.008MHz of A10 as 1.2GHz...
<popolon>
but after the spec, that's a little slower than a8 for int/cpu operation
<popolon>
and far faster for float/simd
<hno>
popolon, a single core A7 is generally less than a single core A8.
<popolon>
yes
<popolon>
but not other problems isn't it ?
<popolon>
it also use less energy
<popolon>
I would like to run it 24/24
<hno>
A20 is a dual core A7. which compensates significantly for the per-core performance difference.
<popolon>
and on fp will be really faster, if applications are multithreaded so
<popolon>
well I will try it :)
<hno>
there is reports of A20 at full utilization being significantly hotter than A10 at full utilization, but it also chews a bit more processing/s than the A10.
<hno>
getting more done.
<popolon>
is there some bench ?
<popolon>
I don't want to use it at full power every time
<popolon>
in fact, only some times, rarely
<popolon>
enough power to some crypted network operation and some really light personal web service is enough for me
<popolon>
and some other nework applications
<popolon>
+t
<hno>
popolon, I haven't run any benchmarks myself. Only seen reports from others.
<popolon>
didn't find benchmarks with A10 vs A20
<hno>
no links, but most likely in the linux-sunxi mailintlist archives.
<hno>
somewhere..
<popolon>
oh, thanks I will search for that
<hno>
popolon, first stop is linux-sunxi.org
<popolon>
does a20 shutdown the second core in low usage mode ?
<popolon>
ok thanks ;)
<popolon>
I will press the buy button :⁾
<hno>
I don''t know how well developer power control is, but the hardware can dynamically enable/disable each core.
<hno>
others in #linux-sunxi channel might be able to answer that question if asked during daytime european time.
<popolon>
ok, I will add this channel to my list of channels then
<popolon>
thanks a lot
<chrs_>
steev: hey
<chrs_>
steev: got a sec?
<steev>
chrs_: hi
<steev>
sure
<chrs_>
some questions coming :)
<chrs_>
what distro are you running on your chromebook?
<steev>
chrs_: gentoo
<steev>
also Kali
<chrs_>
do you have opengl es support?
<steev>
chrs_: yes
<steev>
well, yes on gentoo, no on kali
<chrs_>
is it hardware support or software support via mesa?
<steev>
it's a mixture - you need either xorg 1.12 or 1.13
<steev>
and then you need their opengles libraries
<steev>
and then you need to use their xf86-video-armsoc git repository (NOT linaro's)
<steev>
http://git.chromium.org/gitweb/?p=chromiumos/overlays/board-overlays.git;a=blob;f=overlay-daisy/media-libs/mali-drivers-bin/mali-drivers-bin-1.20-r123.ebuild;h=6b0a675b0324daaa0d67c7c0b36838358c7a6ad3;hb=HEAD just replace ${PVR} with 1.20-r123 to get the .bin file to extract the opengles libraries
<steev>
chrs_: or if you're on gentoo, you can use my github.com/steev/arm overlay just switch to the dev branch to pull in the proper mali-drivers-bin, xorg-server and xf86-video-armsoc
<chrs_>
interesting
<chrs_>
i may end up doing that because i can't get my opengl es stack properly working
<steev>
chrs_: if you do, you also need to have an xorg.conf snippet to use the armsoc driver (xorg defaults to fbdev on arm)
<chrs_>
can you post your xorg.conf?
<chrs_>
i'm not using gentoo but i'll switch to it
<steev>
it's mostly for machines that don't have a neon unit
<steev>
so marvell and tegra2
<steev>
but there are some boards out there with a broken neon unit as well (efika to2 boards)
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<chrs_>
steev: let me know if you get it working
<chrs_>
be interested in checking out what you did, and recreating
<steev>
chrs_: which?
<steev>
fixing mesa-progs?
<chrs_>
the opengl es
<chrs_>
yeah
<steev>
i'd push the patches into my overlay as i always do, so others can use it
<chrs_>
oh ok cool
<steev>
i'm not a dick like the linaro guys and hide everything in launchpad
<chrs_>
lol
<chrs_>
steev: where should i start reading to learn how to install gentoo onto internal storage on the arm chromebook?
<steev>
chrs_: i've not posted it anywhere
<steev>
i think i did a pastebin of it
<steev>
lemme see if i can find it
<steev>
chrs_: http://bpaste.net/show/124380/ its' rather terse as it expects people to be somewhat familiar with gentoo
<chrs_>
ok
<chrs_>
i should probably read up on gentoo first
<chrs_>
since i wasn't even familiar with some of the terms you were using earlier
<chrs_>
thanks
<steev>
chrs_: well it's all built from source
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<chrs_>
well, except for the binary mali opengl es drivers
<chrs_>
or any other binary drivers i'm not aware of
<chrs_>
but i get your point
<chrs_>
it's different system from where i'm coming from
<steev>
chrs_: well, the only difference there is that it copies the files into place, and makes it switchable in the gentoo way of doing things
<chrs_>
ok
<chrs_>
i'm a little scared that i have to partition things myself
<chrs_>
i'm not sure i want to blow away chromeos at this point
<steev>
haha
<chrs_>
the ubuntu script i'm using to install chromeos (i've busted the system a nubmer of times and reinstalled) lets me keep chromeos on a small 1gb partition
<steev>
well
<steev>
the way i do it, worst case you can always plug in the restore chromeos usb and replace everything
<chrs_>
i thnk it's 1gb, might be 2
<steev>
also can just use an sdcard
<chrs_>
the restore chromeos usb?
<chrs_>
i got this machine off craigslist
<chrs_>
i don't think it came with a "restore usb"
<steev>
which is what i did until i was ready
<steev>
at some point i'll remove the screw to make the NOR read-write and write the u-boot to it
<chrs_>
you have a restore chromeos usb stick that came with the machine?
<chrs_>
i guess installing to this 32gb sd would be better than nothing